PLTW EES FINAL STUDY GUIDE

The study of values, issues, and decisions that are involved with the work of engineers is known as:

• conscientious.

• engineering ethics.

• systems thinker.

• efficient.

Engineers need to ask two of the following questions to extend human capabilities. (09-17 Edpuzzle)

• How can we prioritize good?

• What is good for humans?

• How is the system efficient?

• What is good?

Select the American Society of Civil Engineers Code of Ethics distinct principles from the following. (09-17 Edpuzzle)

• Service with competence.

• Reputation by merit.

• Continue professional development.

• Consider system designs and moral reasons.

The one factor that a scientist changes during an experiment. (It affects the results of the experiment). (10-07 Act. 1.3.2 Experimental)

• Dependent Variable

• Independent Variable

• Controlled Variable

The variable that is measured. It is the result of the experiment. (10-07 Act. 1.3.2 Experimental)

• Controlled Variable

• Independent Variable

• Dependent Variable

The factors stay the same throughout the experiment. (10-07 Act. 1.3.2 Experimental)

• Constant

• Independent Variable

• Dependent Variable

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the independent variable? (10-07 Act. 1.3.2 Experimental)

• Dropping from the same height

• Amount of time it takes the helicopter to hit the floor

• Wing Length

• Dropping the same way

Ben makes five paper helicopters with different wing lengths. He drops them the same way from a height of two meters for five trials each. He records the amount of time it takes for each helicopter to fall to the ground.

What is the dependent variable? (10-07 Act. 1.3.2 Experimental)

• Amount of time it takes the helicopter to hit the floor

• Dropping the same way

• Wing Length

• Dropping from the same height

Cindy wanted to find out how the amount of sunlight affects the growth of plants. She placed two tomato plants in 10 inch pots with potting soil and watered them ¼ cup each day. One plant was placed under a cardboard box and one was placed in the sunlight. She measured the growth of the plant each week for three weeks.

What is the dependent variable? (10-07 Act. 1.3.2 Experimental)

• The growth of the plant

• Using the same type of plant

• Each plant was placed in a 10-inch pot

• One plant is in the sunlight and the other is under a box

Based on the tensile test graph, B represents the _ of the material.

• stress

• fracture point

• strain

• elasticity range